Mercurial > hg > truffle
comparison src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp @ 1200:ba263cfb7611
6917766: JSR 292 needs its own deopt handler
Summary: We need to introduce a new MH deopt handler so we can easily determine if the deopt happened at a MH call site or not.
Reviewed-by: never, jrose
author | twisti |
---|---|
date | Fri, 29 Jan 2010 12:13:05 +0100 |
parents | 323bd24c6520 |
children | 24128c2ffa87 |
comparison
equal
deleted
inserted
replaced
1199:0e14bd797dad | 1200:ba263cfb7611 |
---|---|
1 /* | 1 /* |
2 * Copyright 2000-2009 Sun Microsystems, Inc. All Rights Reserved. | 2 * Copyright 2000-2010 Sun Microsystems, Inc. All Rights Reserved. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | 4 * |
5 * This code is free software; you can redistribute it and/or modify it | 5 * This code is free software; you can redistribute it and/or modify it |
6 * under the terms of the GNU General Public License version 2 only, as | 6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
355 // done | 355 // done |
356 __ bind(*slow_case->continuation()); | 356 __ bind(*slow_case->continuation()); |
357 } | 357 } |
358 | 358 |
359 | 359 |
360 void LIR_Assembler::emit_exception_handler() { | 360 int LIR_Assembler::emit_exception_handler() { |
361 // if the last instruction is a call (typically to do a throw which | 361 // if the last instruction is a call (typically to do a throw which |
362 // is coming at the end after block reordering) the return address | 362 // is coming at the end after block reordering) the return address |
363 // must still point into the code area in order to avoid assertion | 363 // must still point into the code area in order to avoid assertion |
364 // failures when searching for the corresponding bci => add a nop | 364 // failures when searching for the corresponding bci => add a nop |
365 // (was bug 5/14/1999 - gri) | 365 // (was bug 5/14/1999 - gri) |
371 address handler_base = __ start_a_stub(exception_handler_size); | 371 address handler_base = __ start_a_stub(exception_handler_size); |
372 | 372 |
373 if (handler_base == NULL) { | 373 if (handler_base == NULL) { |
374 // not enough space left for the handler | 374 // not enough space left for the handler |
375 bailout("exception handler overflow"); | 375 bailout("exception handler overflow"); |
376 return; | 376 return -1; |
377 } | 377 } |
378 #ifdef ASSERT | 378 |
379 int offset = code_offset(); | 379 int offset = code_offset(); |
380 #endif // ASSERT | |
381 compilation()->offsets()->set_value(CodeOffsets::Exceptions, code_offset()); | |
382 | |
383 | 380 |
384 if (compilation()->has_exception_handlers() || compilation()->env()->jvmti_can_post_exceptions()) { | 381 if (compilation()->has_exception_handlers() || compilation()->env()->jvmti_can_post_exceptions()) { |
385 __ call(Runtime1::entry_for(Runtime1::handle_exception_id), relocInfo::runtime_call_type); | 382 __ call(Runtime1::entry_for(Runtime1::handle_exception_id), relocInfo::runtime_call_type); |
386 __ delayed()->nop(); | 383 __ delayed()->nop(); |
387 } | 384 } |
388 | 385 |
389 __ call(Runtime1::entry_for(Runtime1::unwind_exception_id), relocInfo::runtime_call_type); | 386 __ call(Runtime1::entry_for(Runtime1::unwind_exception_id), relocInfo::runtime_call_type); |
390 __ delayed()->nop(); | 387 __ delayed()->nop(); |
391 debug_only(__ stop("should have gone to the caller");) | 388 debug_only(__ stop("should have gone to the caller");) |
392 assert(code_offset() - offset <= exception_handler_size, "overflow"); | 389 assert(code_offset() - offset <= exception_handler_size, "overflow"); |
393 | |
394 __ end_a_stub(); | 390 __ end_a_stub(); |
395 } | 391 |
396 | 392 return offset; |
397 void LIR_Assembler::emit_deopt_handler() { | 393 } |
394 | |
395 | |
396 int LIR_Assembler::emit_deopt_handler() { | |
398 // if the last instruction is a call (typically to do a throw which | 397 // if the last instruction is a call (typically to do a throw which |
399 // is coming at the end after block reordering) the return address | 398 // is coming at the end after block reordering) the return address |
400 // must still point into the code area in order to avoid assertion | 399 // must still point into the code area in order to avoid assertion |
401 // failures when searching for the corresponding bci => add a nop | 400 // failures when searching for the corresponding bci => add a nop |
402 // (was bug 5/14/1999 - gri) | 401 // (was bug 5/14/1999 - gri) |
406 ciMethod* method = compilation()->method(); | 405 ciMethod* method = compilation()->method(); |
407 address handler_base = __ start_a_stub(deopt_handler_size); | 406 address handler_base = __ start_a_stub(deopt_handler_size); |
408 if (handler_base == NULL) { | 407 if (handler_base == NULL) { |
409 // not enough space left for the handler | 408 // not enough space left for the handler |
410 bailout("deopt handler overflow"); | 409 bailout("deopt handler overflow"); |
411 return; | 410 return -1; |
412 } | 411 } |
413 #ifdef ASSERT | 412 |
414 int offset = code_offset(); | 413 int offset = code_offset(); |
415 #endif // ASSERT | |
416 compilation()->offsets()->set_value(CodeOffsets::Deopt, code_offset()); | |
417 | |
418 AddressLiteral deopt_blob(SharedRuntime::deopt_blob()->unpack()); | 414 AddressLiteral deopt_blob(SharedRuntime::deopt_blob()->unpack()); |
419 | |
420 __ JUMP(deopt_blob, G3_scratch, 0); // sethi;jmp | 415 __ JUMP(deopt_blob, G3_scratch, 0); // sethi;jmp |
421 __ delayed()->nop(); | 416 __ delayed()->nop(); |
422 | |
423 assert(code_offset() - offset <= deopt_handler_size, "overflow"); | 417 assert(code_offset() - offset <= deopt_handler_size, "overflow"); |
424 | |
425 debug_only(__ stop("should have gone to the caller");) | 418 debug_only(__ stop("should have gone to the caller");) |
426 | |
427 __ end_a_stub(); | 419 __ end_a_stub(); |
420 | |
421 return offset; | |
428 } | 422 } |
429 | 423 |
430 | 424 |
431 void LIR_Assembler::jobject2reg(jobject o, Register reg) { | 425 void LIR_Assembler::jobject2reg(jobject o, Register reg) { |
432 if (o == NULL) { | 426 if (o == NULL) { |